<?php

use think\migration\Migrator;
use think\migration\db\Column;

class Urls extends Migrator
{
    /**
     * Change Method.
     *
     * Write your reversible migrations using this method.
     *
     * More information on writing migrations is available here:
     * http://docs.phinx.org/en/latest/migrations.html#the-abstractmigration-class
     *
     * The following commands can be used in this method and Phinx will
     * automatically reverse them when rolling back:
     *
     *    createTable
     *    renameTable
     *    addColumn
     *    renameColumn
     *    addIndex
     *    addForeignKey
     *
     * Remember to call "create()" or "update()" and NOT "save()" when working
     * with the Table class.
     */
    public function change()
    {
        // create the table
        $table = $this->table('urls',array('engine'=>'MyISAM'));
        $exists = $this->hasTable('users');
        if(!$exists){
            $table
                ->addColumn('user_id', 'integer',array('limit' => 11,'default'=>0,'comment'=>'用户id'))
                ->addColumn('short_code', 'string',array('limit' => 10,'default'=>0,'comment'=>'短网址代码'))
                ->addColumn('expire_time', 'integer',array('limit' => 11,'default'=>'1563845960','comment'=>'过期时间'))
                ->addColumn('origin_url', 'string',array('limit' => 600,'default'=>0,'comment'=>'原网址'))
                ->addIndex(array('short_code'), array('unique' => true))
                ->create();
        }

    }
}
